Effective and environmentally friendly recycling process designed for LiCoO2 cathode powders of spent Li-ion batteries using mixture of mild organic acids.
Effective and environmentally friendly recycling process designed for LiCoO2 cathode powders of spent Li-ion batteries using mixture of mild organic acids.
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DOI：
10.1016/j.wasman.2018.05.030
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发表时间：
2018-08
期刊：
影响因子：
8.1
通讯作者：
G. P. Nayaka;Yingjie Zhang;P. Dong;Ding Wang;K. V. Pai;J. Manjanna;G. Santhosh;J. Duan;Zhongren Zhou;Jie Xiao
中科院分区：
文献类型：
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作者：
G. P. Nayaka;Yingjie Zhang;P. Dong;Ding Wang;K. V. Pai;J. Manjanna;G. Santhosh;J. Duan;Zhongren Zhou;Jie Xiao
An effective and environmentally friendly recycling process designed for LiCoO2cathode powders of spent Li-ion batteries using mixture of mild organic acids, citric acid (CA), tartaric acid (TA) and ascorbic acid (AA), to recover the metals. Almost complete dissolution of Li and nearly 90% dissolution of Co occurred in at 80 °C for 6 h. The reducing agent, ascorbic acid (AA), converts the dissolved Co(III) to Co(II) thereby selective recovery of Co as Co(II)-oxalate is possible. The formation of Co(III)–and Co(II) complex is evident from the UV–Vis spectra of the dissolved solution as a function of dissolution time. Thus, the reductive-complexing dissolution mechanism is proposed here. These mild organic acids are environmentally benign unlike the mineral acids.
